Improvement in water-meters



UNITED STATES PATENT AOEEICE.

PARKER wELLS, oE LYNN, MASSACHUSETTS.

IMPRQVEMENT' IN WATER-METERS.

Specification forming part of Letters Patent No. 173,379, dated February 8, 1876; application filed January 31, 1876.

To all whom it may concern:

Be itknown that I, PARKER WELLS, of Lynn, in the county of Essex and in the State of Massachusetts, have invented certain newand useful Improvements in Water-Meters; and do hereby declare that the following is a full, clear, and exact description thereof, referto which my invention appertains to make and use the same, I will now proceed to de'- scribe its construction and operation, referring to the annexed drawing, in which- Figure l is a longitudinal section of my water-meter. Fig. 2 is a side view of the central tube. Fig. 3 is a section through the line :c x, Fig. 2. Fig. 4 is a longitudinal section, showing a modification of the construction of the interior valve.

A represents a cylinder of any suitable dimensions, through the center of which passes a tube, B, the heads C of the cylinder being held to its ends by means of nuts E screwed on the pipe B up against said heads, or in any other suitable manner. The water enters the end Blot' the pipe, and the other end of said pipe is .closed by means of a Water-tight cap, B2. 0n the pipe B, within the cylinder A, are placed two pistons or plungers, D D, which have suitable packing to form watertight joints between them Iand the interior of the cylinder, and are packed to the pipe by ordinary stuffing-boxes. yThe two pistons are l connected by means of rods a c', which keep them. always the same distance apart and cause them to move together, back and forth, on the pipe. Within the pipe B is placed a hollow or tubular valve, Gr, open at both ends,

and provided at each end with a circumferential collar or sleeve, H, which fills the space between the valve and the pipe, and forms a chamber, I, around said valve from one collar At each end of the valve G are ports b b, passing radially through the valve and collar, and through the collar 'lare also other ports d d, which run from the outer circumference of the collar to the inner chamber I. In the pipe B, opposite the ends of the valve G, are ports e c, as shown. The various ports are so arranged that when the ports b at one end of thel valve coincide with the ports e at that end of the pipe B, the ports c at the other end of said pipe coincide with the ports d at the other end ofthe valve. From the center of the valve G projects an arm, h, through a cross-slot, t', in the pipe B, which arm prevents the valve from moving longitudinally in the pipe B, and, by turning the arm to the right or left, the valve is turned to change the position of the ports and consequent ow ot' the water. near each end of the rod a, is a notch, au, for the valve-arm h to pass through from side to side, and to each piston is secured a spring. mwl1ich extends on a diagonal line nearly to the opposite piston, as shown in Fig. 2.

The operation of the meter is as follows: The pistons and valves being lin the position shown in Fig. 1, the water, standing under pressure in the pipe B and valve' G, vpasses through the open ports b c into the cylinder A at that end, and forces the pistons toward the other end of the cylinder. this end ot' the cylinder passes through the ports c d into the chamber I, and from thence through the slot i or other opening made for that purpose into the cylinder between the pistons, after which it passes out through the exit n. As soon as the pistons complete their stroke the valve is changed, so as to reverse the ports, and thereby change the movement of the pistons. The valve or valvearm is .to be connected in any suitable manner with the registering apparatus, which I have not deemed it necessary to"show in the drawing.

It will be noticed that the valve is com-- part of the collar, while the other part of the In the under side,

The water at collar is fast to the valve, and has the ports correspondingly arranged.

Having thus fully described my invention, what I claim as new, and desire'to secureby Letters Patent, is the following:

1. In a watermeter I claim a-cylinder with central pipe, in which the water stands under pressure, a rotating balanced valve inside of said pipe, and two connected pistons sliding back and forth on the pipe, all substantially as and for the purposes herein set forth.

2. The combination of the central waterpipe B with ports e e, and the tubular balanced valve G, provided with arm h and end collars or sleeves H H, having ports b and d,

all substantially as and for the purposes herein set forth.

3. The combination, with the central waterpipe B and valve G, with arm h, of the pistons D D, connecting-rod a, with notches w w, and the springsm m, substantially as and for the purposes herein set forth.

In testimony that I claim the foregoing I have hereunto set my hand this 31st day of January, 1876.

PARKER WELLS.

lVlitnesses:

M. L. STOWELL, H. A. HALL. 

